The Meike MK-EFTR-RSS Rainbow Star Drop-In Filter is a specialized optical accessory designed for camera lens systems, functioning as a filter adapter that enables creative photographic effects. This filter creates distinctive rainbow star patterns when capturing light sources, transforming point light reflections into multi-point starbursts with spectral color dispersion. Constructed with precision optical glass, the filter maintains image clarity while introducing artistic light diffraction effects. The standard color variant provides neutral color transmission without altering the base color balance of your photographs. Measuring approximately 46 mm in diameter for drop-in filter systems, this accessory is compatible with various lens adapter configurations. The filter features multi-layer coatings to minimize flare and ghosting while maximizing light transmission efficiency. Engineered for durability, the optical glass is resistant to scratches and environmental factors, ensuring long-term performance reliability. The rainbow star effect intensity varies with aperture settings, with more pronounced starbursts appearing at smaller apertures. This filter is particularly effective for night photography, cityscapes, and situations involving multiple light sources where enhanced visual interest is desired. The drop-in design allows for quick installation and removal without requiring additional lens attachments. Made with precision machining tolerances, the filter maintains proper alignment within compatible filter holder systems. The optical characteristics include minimal impact on overall sharpness while providing controlled light diffraction. Suitable for both photography and videography applications, this filter adds creative possibilities to various shooting scenarios without compromising the fundamental optical performance of your lens system.